Exhibit 21
Middlesex Water Company
Subsidiaries
| Jurisdiction of Organization | |
| Tidewater Utilities, Inc. | Delaware |
| Pinelands Water Company | New Jersey |
| Pinelands Wastewater Company | New Jersey |
| Utility Service Affiliates (Perth Amboy) Inc. | New Jersey |
| Utility Service Affiliates, Inc. | New Jersey |
| Twin Lakes Utilities, Inc. | Pennsylvania |